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Wireless body sensors are becoming popular in healthcare applications. Since they are either worn or implanted into human body, these sensors must be very small in size and light in weight. The energy consequently becomes an extremely scarce resource, and energy conservation turns into a first class design issue for Body Sensor Networks (BSNs). This paper deals with this issue by taking into account the unique characteristics of BSNs in contrast to conventional Wireless Sensor Networks (WSNs) for e.g. environment monitoring. A prediction-based data transmission approach suitable for BSNs is presented, which combines a dual prediction framework and a low-complexity prediction algorithm that takes advantage of PID (Proportional-Integral-Derivative) control.
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